BIOLOGY HIGH SCHOOL

1 Every ecosystem carries out the basic processes of:energy flow and matter cycling

photosynthesis and nitrification

solar energy capture and re-radiation

evaporation and precipitation



2 The biological role played by a species in its environment is called a:

ecosystem

habitat

niche

population


3 Predators rarely kill and eat all available prey because:

predator and prey species often occupy the same trophic level in an ecosystem

prey species often lack protective mechanisms to deter being eaten

many predator and prey species have a commensalistic relationship

predator species often will switch its prey as one prey species becomes less abundant



4 _____ is an overabundance of nutrients that leads to excessive plant growth and

reduction of oxygen in an ecosystem.

denitrification

eutrophication

nitrification

phosphorylation


5 Which of these biomes receives the greatest amount of yearly rainfall?

boreal forest

grasslands

temperate forests

tropical forests


6 An organism's position within a food web is known as its:

ecosystem

habitat

niche

trophic level


7 Which of the following describes organisms in a pelagic zone?

plankton floating near the ocean surface

bottom-dwellers on the ocean floor

barnacles glued to stone in an intertidal zone

frogs in a pond close to the pond's edge


8 Which of the following is NOT an example of secondary succession?

farmland is abandoned

a forest is clear cut

a lava flow covers the landscape

a wildfire burns away the vegetation on a hillside


9 In a lake, the epilimnion is the:

environment found close to shore in a lake

environment found at the lake bed

lower, colder layer

upper surface layer

Answers

Answer 1
Answer: yah thats correct...

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Answers

chopping off trees helps society by allowing new plants and trees that are not being allowed by the trees (not enough space/blocking sunlight) to grow.
another benefit is that we need wood to build lots of places and make lots of things that could help us in making our society a better place.
it allows people to get extra space that they probably need, as the population keeps on growing.. 
hope these helped! brainliest?

When a plant produces sugars and transports them during translocation, which main plant tissues are at work?dermal and meristem
dermal and vascular
ground and dermal
vascular and ground

Answers

The answer to the question stated above is letter D. Vascular and Ground. 
Vascular tissue comprises the xylem and phloem tissues. Xylem tissue  transports water and nutrients from the roots to different parts of the plant while phloem tissue  transports organic compounds (sugars and nutrients manufactured in the shoot) from the site of photosynthesis to other parts of the plant. 

Answer:

vascular and ground is the right answer.

Explanation:

Compare and contrast what happens in mitosis and meiosis and discuss the importance of each process to a living organism.

Answers

mitosis is a process of cell duplication during which one cell gives rise to two genetically identical daughter cells.
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71. After Precambrian Time, the basic divisions of the geologic time scale, from larger to smaller, are

Answers

The answer is eons, eras, and periods.

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Answers

the cerebrum is a large part of the brain containing the cerebral cortex it lies either in front or on top of the brainstem

Briefly describe how the process of translation is started

Answers

Answer & Explanation:

After a complimentary DNA chain is generated as messenger RNA (mRNA), Sequence of nuclotides in a mRNA directs the addition of a specific sequence of amino acids to form the protein. This usually occur on ribosome.

The polypeptide chain now increases in length by covalent attachment of successive amino acids units, each carried to the ribosome and correctly positioned by its transfer RNA (tRNA). The completion of the polypeptide chain is signalled by a termination codon present in the mRNA.
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